Table 1.

Baseline differences between inpatients with restricting (R-AN) and binge-purging subtypes of AN (BP-AN)

	AN total sample (n = 139)
	R-AN (n = 96)	BP-AN (n = 43)	Test statistics		Effect size
	Mean (SD)	Mean (SD)	t (df = 138)	p	Cohen’s d
BMI	13.9 (1.75)	14.7 (1.9)	2.353	0.020	0.44
Age, years	24.6 (11.1)	27 (9.6)	1.180	0.240	0.23
Duration of illness, years	5.5 (7.6)	11 (10.2)	3.363	0.001	0.61
Length of hospital stay, days	37.1 (19)	34.7 (11.1)	0.719	0.474	0.15
BSQ	113.4 (44.6)	142.9 (43.3)	3.271	0.001	0.67
BCQ total score	57.5 (27.2)	66.6 (27.6)	1.701	0.091	0.33
BIAQ total score	41.1 (18.3)	47.4 (18)	1.671	0.097	0.35
EDE-Q total score	3.1 (1.7)	4.1 (1.5)	3.140	0.002	0.63
BDI	14.8 (7.9)	17.6 (7.9)	1.851	0.067	0.36
STAI-state	52.7 (14.5)	58.3 (13.7)	2.019	0.046	0.4
STAI-trait	54.3 (13.3)	61.6 (11.6)	2.963	0.004	0.59

Abbreviations: BCQ, Body Checking Questionnaire; BDI, Beck Depression Inventory; BIAQ, Body Avoidance Questionnaire; BMI, Body Mass Index; BSQ, Body Shape Questionnaire; EDE-Q, Eating Disorders Examination-Questionnaire; STAI, State Trait Anxiety Inventory.

Cohen’s d effect sizes: small (≥0.2 and <0.5), medium (≥0.5 and <0.8), and large (≥0.8).

statistical significance (p < 0.05) has been highlighted in bold.